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NFC: trf7970a: add TI recommended write of zero to Register 0x18 

Signed-off-by: Geoff Lansberry <geoff@kuvee.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
hifive-unleashed-5.1
Geoff Lansberry 2016-04-18 15:48:39 -04:00 committed by Samuel Ortiz
parent fa1ce54ea3
commit 58d46f538b
1 changed files with 4 additions and 0 deletions
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4
drivers/nfc/trf7970a.c
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@ -1048,6 +1048,10 @@ static int trf7970a_init(struct trf7970a *trf)
if (ret)
goto err_out;
ret = trf7970a_write(trf, TRF7970A_NFC_TARGET_LEVEL, 0);
if (ret)
goto err_out;
usleep_range(1000, 2000);
trf->chip_status_ctrl &= ~TRF7970A_CHIP_STATUS_RF_ON;